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Home › Kia › 2010 › Rondo LX, 2.4 9 › Repair and Diagnosis › Engine Performance › System › Engine Control System Diagnosis (2 Of 2) - 2.4L › DTC P2251: O2 Sensor Reference Ground Circuit/Open (Bank 1 Sensor 1) › General Information › DTC Description

DTC Description

The PCM monitors front O2 sensor reference ground circuit (VG) and sets DTC P2251 if it detects front O2 sensor signal is stuck.